摘要
根据新一代L波段测风雷达的测风原理,探讨了海岛测站在大风、台风天气雷达低仰角探测中,低空难以实现角度自动跟踪与近距离抓球等问题。阐述了丢球的原因和解决方法,并以个例分析来说明低空低仰角丢球、旁瓣球的特征。提出在地面风速大的情况下,低空低仰角丢球可利用风速判断仰角范围、配合下风方位帮助抓球。总结L波段雷达的探测经验,为台站灵活使用L波段雷达提供借鉴。
On the basis of the detection principles of the new generation L-wave radar,the difficulties existing in the detection of strong wind weather with L-wave radar at lower altitudes and low elevation angles in island observation stations are discussed.Particularly,the phenomenon of balloon loss and side-lobe balloon at lower altitudes and low elevation angles are analyzed.A solution for balloon loss at lower altitudes and low elevation angles under strong surface winds,identifying the appropriate elevation range by means of downstream winds,is presented.Some experiences are also given,which can be used as reference for better use of L-wave radar
出处
《气象科技》
北大核心
2010年第4期467-471,共5页
Meteorological Science and Technology
关键词
L波段雷达
低空
低仰角
探测方法
L-wave radar
lower altitude
low elevation angle
detection technique
